APA (7th ed.) Citation

Klimm, L. E., Starkey, O. P., & Hall, N. F. (1940). Introductory economic geography (2.ed.). Harcourt, Brace.

Chicago Style (17th ed.) Citation

Klimm, Lester E., Otis P. Starkey, and Norman F. Hall. Introductory Economic Geography. 2.ed. New York: Harcourt, Brace, 1940.

MLA (9th ed.) Citation

Klimm, Lester E., et al. Introductory Economic Geography. 2.ed. Harcourt, Brace, 1940.